The histogram of scores in a math exam is approximately symm

The histogram of scores in a math exam is approximately symmetric and mound-shaped. It is also given that: Mean:55.58, Standard Deviaton: 9.94.

A) Students with top 2.5% scores in this exam were given a special award. What was the minimum score required to receive the award?

Solution

Mean +1.96SD =55.58+1.96*9.94=75.0624

Mean -1.96SD= 55.58-1.96*9.94=36.0976

Henc ,answer-> score greater than 75